linux-kernel - Re: [PATCH 1/6] dt-bindings: PCI: ti,am65: Add PCIe host mode dt-bindings for TI's AM65 SoC

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Message-ID: <20210325233812.GA1943834@robh.at.kernel.org>
Date:   Thu, 25 Mar 2021 17:38:12 -0600
From:   Rob Herring <robh@...nel.org>
To:     Kishon Vijay Abraham I <kishon@...com>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Marc Zyngier <maz@...nel.org>, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Lokesh Vutla <lokeshvutla@...com>
Subject: Re: [PATCH 1/6] dt-bindings: PCI: ti,am65: Add PCIe host mode
 dt-bindings for TI's AM65 SoC

On Thu, Mar 25, 2021 at 02:30:21PM +0530, Kishon Vijay Abraham I wrote:
> Add PCIe host mode dt-bindings for TI's AM65 SoC.
> 
> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
> ---
>  .../bindings/pci/ti,am65-pci-host.yaml        | 111 ++++++++++++++++++
>  1 file changed, 111 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pci/ti,am65-pci-host.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pci/ti,am65-pci-host.yaml b/Documentation/devicetree/bindings/pci/ti,am65-pci-host.yaml
> new file mode 100644
> index 000000000000..b77e492886fa
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pci/ti,am65-pci-host.yaml
> @@ -0,0 +1,111 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (C) 2021 Texas Instruments Incorporated - http://www.ti.com/
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/pci/ti,am65-pci-host.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: TI AM65 PCI Host
> +
> +maintainers:
> +  - Kishon Vijay Abraham I <kishon@...com>
> +
> +allOf:
> +  - $ref: /schemas/pci/pci-bus.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ti,am654-pcie-rc
> +
> +  reg:
> +    maxItems: 4
> +
> +  reg-names:
> +    items:
> +      - const: app
> +      - const: dbics

Please use 'dbi' like everyone else if this isn't shared with the other 
TI DW PCI bindings.

> +      - const: config
> +      - const: atu
> +
> +  power-domains:
> +    maxItems: 1
> +
> +  ti,syscon-pcie-id:
> +    description: Phandle to the SYSCON entry required for getting PCIe device/vendor ID
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +
> +  ti,syscon-pcie-mode:
> +    description: Phandle to the SYSCON entry required for configuring PCIe in RC or EP mode.
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +
> +  msi-map: true
> +
> +  dma-coherent: true
> +
> +patternProperties:
> +  "interrupt-controller":

Don't need quotes.

> +    type: object
> +    description: interrupt controller to handle legacy interrupts.
> +
> +required:
> +  - compatible
> +  - reg
> +  - reg-names
> +  - max-link-speed
> +  - num-lanes
> +  - power-domains
> +  - ti,syscon-pcie-id
> +  - ti,syscon-pcie-mode
> +  - msi-map
> +  - ranges
> +  - reset-gpios
> +  - phys
> +  - phy-names
> +  - dma-coherent

'interrupt-controller' node is optional?

> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/soc/ti,sci_pm_domain.h>
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    bus {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +
> +        pcie0_rc: pcie@...0000 {
> +                compatible = "ti,am654-pcie-rc";
> +                reg =  <0x0 0x5500000 0x0 0x1000>,
> +                       <0x0 0x5501000 0x0 0x1000>,
> +                       <0x0 0x10000000 0x0 0x2000>,
> +                       <0x0 0x5506000 0x0 0x1000>;
> +                reg-names = "app", "dbics", "config", "atu";
> +                power-domains = <&k3_pds 120 TI_SCI_PD_EXCLUSIVE>;
> +                #address-cells = <3>;
> +                #size-cells = <2>;
> +                ranges = <0x81000000 0 0          0x0 0x10020000 0 0x00010000>,
> +                         <0x82000000 0 0x10030000 0x0 0x10030000 0 0x07FD0000>;
> +                ti,syscon-pcie-id = <&pcie_devid>;
> +                ti,syscon-pcie-mode = <&pcie0_mode>;
> +                bus-range = <0x0 0xff>;
> +                num-viewport = <16>;
> +                max-link-speed = <2>;
> +                dma-coherent;
> +                interrupts = <GIC_SPI 340 IRQ_TYPE_EDGE_RISING>;
> +                msi-map = <0x0 &gic_its 0x0 0x10000>;
> +                #interrupt-cells = <1>;
> +                interrupt-map-mask = <0 0 0 7>;
> +                interrupt-map = <0 0 0 1 &pcie0_intc 0>, /* INT A */
> +                                <0 0 0 2 &pcie0_intc 0>, /* INT B */
> +                                <0 0 0 3 &pcie0_intc 0>, /* INT C */
> +                                <0 0 0 4 &pcie0_intc 0>; /* INT D */
> +
> +                pcie0_intc: interrupt-controller {
> +                        interrupt-controller;
> +                        #interrupt-cells = <1>;
> +                        interrupt-parent = <&gic500>;
> +                        interrupts = <GIC_SPI 328 IRQ_TYPE_EDGE_RISING>;
> +                };
> +        };
> -- 
> 2.17.1
>